Structural aspects of the spin-ladder compound Sr14Cu24O41

Single crystal neutron scattering measurements have been performed on the spin-ladder compound Sr14Cu24O41 at 7 K. The incommensurate composite structure has been determined using the superspace group formalism. The low temperature structure does not show a significant shift of the Cu02 chains along...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 2004-04, Vol.403 (4), p.290-296
Main Authors: ETRILLARD, J, BRADEN, M, GUKASOV, A, AMMERAHL, U, REVCOLEVSCHI, A
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Physics
Superconductivity
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Summary:Single crystal neutron scattering measurements have been performed on the spin-ladder compound Sr14Cu24O41 at 7 K. The incommensurate composite structure has been determined using the superspace group formalism. The low temperature structure does not show a significant shift of the Cu02 chains along the c direction. In addition to the main and satellite nuclear reflections compatible with the incommensurate composite structure, new weak super-structure peaks at Q = (hkLc,), with Lc = n plus/minus 0.20 (-0.01) have been observed. Their origin is probably due to the charge ordering associated to a three-dimensional configuration of the spin dimers in the Cu02 chain.
ISSN:0921-4534
1873-2143
DOI:10.1016/j.physc.2004.01.003